80440844444 has 12 divisors (see below), whose sum is σ = 140774219544. Its totient is φ = 40219638864.

The previous prime is 80440844431. The next prime is 80440844453. The reversal of 80440844444 is 44444804408.

It is a junction number, because it is equal to n+sod(n) for n = 80440844395 and 80440844404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77639 + ... + 408545.

It is an arithmetic number, because the mean of its divisors is an integer number (11731184962).

Almost surely, 2^80440844444 is an apocalyptic number.

It is an amenable number.

80440844444 is a deficient number, since it is larger than the sum of its proper divisors (60333375100).

80440844444 is a wasteful number, since it uses less digits than its factorization.

80440844444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391684 (or 391682 counting only the distinct ones).

The product of its (nonzero) digits is 1048576, while the sum is 44.

The spelling of 80440844444 in words is "eighty billion, four hundred forty million, eight hundred forty-four thousand, four hundred forty-four".